Project: RS2 ABY

[A80Avant]

Get the thermostat mod done

[Sonic]

Also very like, probably about 120

[Rusty]

Yeah i backed off immediately when I noticed.

Could this have been partly caused by the front wheel arch liners having been removed along with the undertray, causing the airflow and cooling to be significantly reduced?

Mine's in the same state. What water temp dud you see?

[Sonic]

150 sounds very high. Even in 30deg heat, mine hit 130 on stock cooler, 135 max.

Yeah i backed off immediately when I noticed.

Could this have been partly caused by the front wheel arch liners having been removed along with the undertray, causing the airflow and cooling to be significantly reduced?

[andy10v]

Could this be anything to do with the 10bar pump?

[martinws]

By the end of the day the metal cover to the fuel tank in the back of the car was very hot to the touch which struck me as unusual..

A fuel cooler on the return line might be an idea. Fuel must have been roasting to cause that tank cover to heat up. Could fuel evaporate in the lines and filters cause problems?

[Rusty]

150 sounds very high. Even in 30deg heat, mine hit 130 on stock cooler, 135 max.

[Sonic]

By the end of the day the metal cover to the fuel tank in the back of the car was very hot to the touch which struck me as unusual.

Heat soak does seem like the likely reason, and it certainly felt that way because of the way it struggled to start after leaving it to sit whilst hot.

Ultimately i ended up doing 2-3 cool down laps at the end of each session, so probably like 10 minutes of cruising which saw the oil and coolant temps drop back down to their normal 90, but even then would leave the bonnet open to cool things further.

[Rusty]

Fuel rail and injectors are matt black... which absorbs maximum heat. Chrome plate or even silver paint will repel heat much better

Does the IM get hotter than it's surrounding air? Could paint that matt black...

[Rusty]

How thick is the stock gasket, 1.5, 2mm ?
Just get some 3-4 mm PTFE sheet and make a gasket out of that, you will not need a gasket either side as it will seal good as it is so hardly any movement in manifold position at all.
Having said that, its fckin expensive stuff PTFE, although I could 'borrow' some from work if anybody wants to try it.

I'll give it a go

[Zoig]

I understood that the fuel itself should cool the injectors and fuel rail, afterall there is significant flow trough the FPR back to the tank + the ammount that gets used trough injectors. I'd try heatshielding the injectors or try to cool the fuel lines running under the car if indeed the fuel does get hot, i've seen heatsink or similiar under B6 TDI, airflow passing by should be more than enough to cool the petrol whilst car is moving.

[4WheelDrifter]

I don't think a spacer would do any harm, just possibly make the fuel dispersion in the intake sub optimal. But if it improved the running of the car when hot, then obviously it would be worth doing.
Injectors placed further from the head are usually in addition to the stock location, and often only used at higher boost/rpm levels.

[driftin jo]

How thick is the stock gasket, 1.5, 2mm ?
Just get some 3-4 mm PTFE sheet and make a gasket out of that, you will not need a gasket either side as it will seal good as it is so hardly any movement in manifold position at all.
Having said that, its fckin expensive stuff PTFE, although I could 'borrow' some from work if anybody wants to try it.

[A80Avant]

The injectors are aimed at the back of the valves, so a spacer would mess with that.

It does sound like a percolation problem, as anyone who has run a blow through carb system or two will know about. Only there's no float bowl to worry about. Could the fuel rail get that hot?

Ok. So it would mess with that. Sprey pattern would be shifted slightly further away from valves. Effect?

Judging from the fact that in the old days they used to put more injectors well away from the actual original position in order to get more fuel for larger turbos and everything worked fine, I'd say the spacer wont do any harm whatsoever.

These slavers are being sold and used in rs4s at will on high powered and modified cars again with no issues.

[4WheelDrifter]

The injectors are aimed at the back of the valves, so a spacer would mess with that.

It does sound like a percolation problem, as anyone who has run a blow through carb system or two will know about. Only there's no float bowl to worry about. Could the fuel rail get that hot?